diff --git a/packages/web/src/components/Calendar.astro b/packages/web/src/components/Calendar.astro
index a626aed..c66978d 100644
--- a/packages/web/src/components/Calendar.astro
+++ b/packages/web/src/components/Calendar.astro
@@ -29,8 +29,8 @@ const activities = Astro.props.activities.map((w) => {
 
     if (overlap(previous, current)) {
       if (decimal(current.time.start) - decimal(previous.time.start) < 0.5) {
-        adjacents.add(current);
         adjacents.add(previous);
+        adjacents.add(current);
       } else {
         current.inset = previous.inset + 1;
       }
@@ -40,12 +40,11 @@ const activities = Astro.props.activities.map((w) => {
       adjacents.size === adjacentCount ||
       (adjacents.size > 0 && i === weekday.length - 1)
     ) {
-      [...adjacents]
-        .sort((a, b) => decimal(a.time.start) - decimal(b.time.start))
-        .forEach(
-          (activity, position) =>
-            (activity.adjacent = { position, count: adjacents.size }),
-        );
+      let position = 0;
+      for (const activity of adjacents) {
+        activity.adjacent = { position, count: adjacents.size };
+        position++;
+      }
       adjacents.clear();
     }
   }
diff --git a/packages/web/src/pages/horaire.astro b/packages/web/src/pages/horaire.astro
index 5665280..6950648 100644
--- a/packages/web/src/pages/horaire.astro
+++ b/packages/web/src/pages/horaire.astro
@@ -61,7 +61,7 @@ const activities: Activity[][] = [
     {
       type: 0,
       title: "activite 2",
-      time: { start: { hour: 13, minute: 15 }, end: { hour: 15, minute: 0 } },
+      time: { start: { hour: 13, minute: 0 }, end: { hour: 15, minute: 0 } },
       lessons: {
         count: 8,
         first: new Date(2025, 1, 6),